In my opinion, I like either hermits or snails. I tend to think hermits go after snails and their shells. Plus snails have large varieties of different habits from nassarius to ceriths and turbos. I bought my starter pack from reefcleaners.org because my local store charges a few bucks for a snail so I said...yeah no. Again my opinion I have an 80 gallon tank, went for 50 assorted and they have exploded like crazy, I can spot snails everywhere I look.